Center-bearing.



No. 779,572. PATENTHD JAN. 10, 1905.

- a. c. BARBER.

CENTER BEARING. APPLICATION FILED D0.21, 1903.

2 SHEETS- SHEET 1.

Nullms mp1s. Nr-Yuv D c UNITED STATES Patented January 10, 1905.

PATENT OFFICE.

CENTER-BEARING.

SPECIFICATION forming part of Letters Patent No. 779,572, dated January 10, 1905.

Application filedDecember 21,1903. Selig-1N0. 186,138.

To all whom it may concern: Be it known that I, J OHN C; BARB R,'a citi- 'zen of the United States, residing at Chicago,

in the county of Cook and State of lllinois,have

invented certain new and useful Improvements in Center-Bearings; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in-the art to which itappertains to make and use the same.

My present invention relates to center-bearings for cars, and especially to those employsigned in accordance with my present invention. Fig. 2 is a transverse vertical section taken on the irregular line m as of Fig. 1, and Fig. 3 is a side ele'vationof the center-bearin g.

.The numeral 1 indicates the upper member, and the numeral 2 the lower member, of the center-bearing, the former having a depressed central hub-3 and the latter having a depressed eentral portion or hub-seat 4:. The hub 3 and the hub-seat 1 are formed with coincident perforations or seats 5 for the king-bolt or pintle.

which are interposed a plurality of radiallydisp'osed outwardly flaring conical rollerbearings 7. In their larger and outer ends therollers 7 are provided with axial pin-seats 8. Since this construction employs smooth roller-bearing surfaces-that is, bearing-surfaces Withoht depressions therein-means must be provided for holding the said rollers properly spaced in the proper radial arrangement. This-.1 accomplish by an extremely Simple and efiicient device, which consists (Not shown.) -Outward of thehub 3 and depressed seat 4t the members 1 and 2 are formed with beveled and outwardly-flaring annular rollerbearing surfaces 6, between simply of a, loose thrust-ring 9, having on its inner surface a plurality of inwardly-projecting radial trunnions 10, which fit one into the 'seat,8 of each roller 7 Preferably the thrust-ring 9 is also formed with bosses 11 at the bases of the trunnions 10 for direct engagement with the outer ends of the rollers 7 to directly receive the outward thrust from the rollers. As is evident, the thrust-ring 9 is supported simply by the rollers and hasfrictional contact with no other parts. The

rollers may be very quickly applied-t0 and removed'f-rom the trunnions of the said thrust-i ring by simple endwise movements and without requiring the removal of any bolt, pin, or other device.

The bearing members 1 and 2, respectively, are preferably formedwith downturned and upturned marginal flanges 12 and 13, which form a housing inclosing the thrust-ring 9.

To limit the extreme pivotal movements of the members 1 and 2 in respect to each other, one of the members-to wit, as shown, the upper memberis provided with a pair of heavy flanged stop-lugs I L, that work between laterally-spaced pairs of stop-lugs 15 on the lower member 2.

Thecenter-bearing above described while of small cost is very strong and is efficient for the purposes had in view.

It will of course be understood that the device described is capable of modification Within the scope of my invention as herein set forth and claimed. \Vhat I claim, and desire to secure by Letters Patent of the United States, is as follows: 1. In a center-bearing, the combination with the upper member 1, having the depressed hub 3, and the lower member 2, having the depressed hub-seat 4:, the said two members having the annular outwardly-flaring roller-bearing surfaces 6, of the conical rollers 7, radially disposed and interposed between said bearingsurfaces 6, said rollers having, in their outer ends, the axial seats 8, and the thrust-ring 9 having the inwardlyprojecting trunnions 10 engaging, one in the seat 8 of each roller 7, substantially as described.

2. In aeenter-bearing, the combination with upper and lower members 1 and 2, one of said members having stop-lugs 14, and the other thereof having the cooperating pairs of laterally-spaced stop-lugs 15, of rollers interposed between bearing-surfaces of the said members 1 and 2, substantially as described.

In testimony whereof I afix my signature in presence of two witnesses.

JOHN C. BARBER.

Witnesses:

L. W. BARBER, A. M. LOVE. 

